Scraper loader system



C. E. DAVIS.

SCRAPER LOADER SYSTEM. APPLICATIONHLED SEPT. 2o. 1920.

Patented Feb.- 28, 1922.

2 SHEETS-SHEET 1.

C. E. DAVIS.

SCRAPER LOADER SYSTEM.

APPLICATION FILED SEPT. 20. 1920.

Patented Feb. 28, 1922.

2 SHEETS-SHEET 2.

AUgOS.

.UNITED STATES PATENT oF'FlcE.'

CHARLES E. DAvIs, or CHICAGO, ILLINOIS, assIGNonro CoomuN MANUIYACTURIN@v COMPANY, or CHICAGO, ILLINOIS, A ConroaarIoN or ILLINoIs. somma Loenen sysrau.

To all whom z't may concer-n.'

Be it known that I, CHARLns E. citizen of the United States, residing Ijxvrs, a at Chicago, in the county of-Cook andtate of Illinois, have invented an Improvement in Scraper Loader Systems, of which the following is a specification.

This invention relates to improvements in apparatus for handling loose material and more particularly to scraping devices for transporting coal from the working face of a mine to an entry for loading in mine cars. The object of the present invention is to provide a more elicient apparatus of the class ing t e scraper invarious operating posil tions in one corner of the mine room.

My inventori is particularly adaptable to assist in the so-called scraper-loader system of coal handling, of which a typical apparatus is illustrated in Figures 2 and 3. A scraper 1 is provided with a headV rope 2 and tail rope 3, each of said ropes beingoperated by a suitable hoisting engine of the usual type (not shown), usually' situatedl outside of the mine room, in the entry'or gallery 4. The head ropeI 2 is adapted to be led over a detachable 'sheave 5 anchored in one corner of the room adjacent the working face 6. The tail rope 3 is led around the stationary sheave 7 anchored in the opposite corner of the room, and from thence around suitable guiding sheaves to the hoisting engine. In

startingthe loading operation, the scraper is dragged by the tail rope 3 to the far corner of the room adjacent the stationary pullley 7 The tail rope 3 is then allowed to run free, and the head rope 2 is led around the detachable sheave 5. With this arran e- 'ment, when the head ropev is pulled by t e hoisting engine, thehscraper moves along the working face 6 of the mine wall, to collect the loose material adjacent. thereto, and thence turned toward the entry by detaching the head rope 2 successively from the sheave illustrating the use of my i 5, anda-second detachable sheave 8. The

head rope 2 is then disengaged from the sheave 8, and the straightpull is exerted on the scraper to move it outwardly to the entry where-1t is loaded into cars in the usual manner.

A delector or placed in a position near, but4 spaced from' the detachable sheave 5 in order vto maintain the sc raper in a path along the s ide of the room 1n its movement to as a large portion of the room is usually occup1ed with waste materal -or mine props around which the scraper must move. When the head rope 2 is detached from the sheave and the scraper moves toward the ent tail rope 3 engages the defiectoror buffer gulde 9.

lA preferred construction of scra erV used with systems such as described 1s illustrated in Figure 1, which comprisesa bottomless body portion 10 having substantially guide pulley 9 isv usually.

and from the entry,`

Speeication of Letters Patent. .Pajtentd Feb, 28; 1.922,1 Application leni September. 20,1920. Serial Ne.' 411,554. y

ry the z upright side walls 1l, 11 converging at the rear of the scraper ini a rounded rear end portion 12.

One diliculty has been met with in manipulating the scraper to load the coal in the far corner of the room adjacent the sheave 7, when the scraper is in starting posltion. The scraper is necessarily -of considerable weight, and must be shifted laterally to several positions. in order to gather the loose coal in this`corner.` Another difficulty has been in scraping close to the workingy face 6, which heretofore has lbeen accomplished by directing the scoop toward the face before the rope.

In they present invention, the tail-rope connection with the scraper comprises a suitable link 13 attached to the tail rope 3, and movable along a suitable rod or bar 14 having suitable connections at one end adjacent the approximate longitudinal center lme of the scraper, and-at the other end on the side of the scraper nearest the working face of the mine. The arrangement is such that the link 13 may freely move along the bar 14 during the operation of the scraper as will hereinafter more fullyappear.` It ispreferable to provide a rearwardly and outwardly extending portion or notch 15 on the bar 14 at a point substantially on thelongitudinal center line of the scraper as shown. I also provide the scraper with a'hook 16 atpull is exerted on the head tached to the side thereof opposite the working Vface of thegmine, and preferably 'arbearin portion or shoe 17 may also be provided integral with said hook, and extending 4rearwardly around .the rear end of the scraper. l

With the apparatus above described, a

suitable jack or similar device 18 isfixedin position near the sheave 7 and to one side of the normal path of travel ofthe scraper as it moves from the delectorguide 9 toward the sheave 7, as shown in Figure 3.

As the scraper is moved rearwardly after depositing its load in the entry, the link.`

13 if not already engaged in the notch 15, is moved automatically toward the said notch so as to engage therein, because of the shape of the scoop, and the drag of the head rope 2 which is drawn thereafter. At all events, when the scraper reaches the position shown in Figure 3, the link 13 would be drawn into the said notch 15 in position to drag the scraper rearwardly substantiall along its longitudinal axis, as shown in ull lines in Figure 4. As the scraper moves rearwardly it is brought into contact with said fixed member 18 at some point along the bearing member 17, substantially as indicated. in dotted lines in Figure 4, and is deflected slightly toward the face of the mine, until.

the hook 16 becomes engaged with the fixed member 18. As soon as the hook becomes thus engaged, it will be observedthat movement of one side of the scraper will be retarded, but a continued pull on the tail rope 3 will cause the scoop to rotate about the fixed member 18 as an axis, while the link 13 of the tail rope slides along the rod 14 and around to the side of the scoop and nally reaches a position as shown in Figure 5, inl which the scoop is turned in a position at an angle to the face. From this position, which is called the starting position, the movement ofthe scraper is reversed by releasing the tail rope 3 and pulling on the head rope 2. It will thus be seen that the scraper is positively turned in position to gather a large proportion of coal immediately adjacent the sheave 7, thereby minimizing the lateral shifting of the scoop, and the shovelin ordinarily necessary in order to gather a l the loose coal in this corner. This feature isparticularly advantageous in gathering coal under a lOW rOQf when? dimclllte? `Furthermore, it will be understood that many variations may be made in thel specific construction and arrangement of the tail rope connections without -departing from the spirit and scope of my invention.

Having described my invention what I claim as new and desire to cover by Letters Patent, is:

`1. In a scraping apparatus, a scraper provided with a rope having a movable connection with said scraper, and means for retarding the movement of said scraper at a point on one side thereof during its normal movement in one direction.

2. In a scraping apparatus, .a scraper provided with a head rope, and a tail rope having slidable connection along the rear end and one side of said scraper, and a projection on the other side of said scraper adapted to engage a fixed support.

3. In a scraping apparatus, a scraper provided with a head rope, a tail rope, means affording movable connection of said tail 'rope and said scraper, comprising an arcuate guide member extending from one side of said scraper substantially to the longitudinal center line at the rear end thereof, a coacting link attached to the tail rope, and a projection on the opposite side of said scraper adapted to engage a ixed support.

4. The method of handling a rope operated scraperdevice which consists in positioning a fixed member at a predetermined position in the rearward line of movement of the scraper, pulling the scraper rearwardly 'to engage said member at a point on one side of said scraper, and continuin the pull on said scraper, with said fixe member as an axis, into a position at an angle to the normal line of movement of the scraper.

Signed at Chicago, in the county of Cook and State of Illinois, this 1 7 day of Sept., A. D. 1920. v

CHARLES E. DAVIS, 

